(PACK OF 4 BOOKS) Indian Polity Bharat ki rajyavyashta by M Laxmikant ( Hindi| 6th Revised Edition) Adhunik Bharat ka itihas (Bipin Chandra) Madhyakaleen Bharat ka itihas By Satish Chandra Prachin Itihas ka itihas (RS Sharma) Best Combo in UPSC Books